<!DOCTYPE html>
<html><head><style type="text/css">      .main {
            display:flex;
            flex-direction:column;
            justify-content:center;
            width:100vw;
            height:100vh;
        }
        .primes {
            display:flex;
            flex-direction:row;
        }
        .filter {
            display:flex;
            flex-direction:row;
        }
        .fin {
            display:flex;
            flex-direction:column;
        }
        .fin__number {
            padding-left:5px;
        }
        .fcontent {
            border-style: solid;
            border-color: #100;
            border-width: 1px;
            width:50px;
            height:450px;
            flex-grow:1;
            line-height:450px;
            text-align:center;
            font-weight:bold;
        }</style></head><body></body></html>